Coburn-Myers Fastening Systems, Inc.
Coburn-Myers Fastening Systems, Inc.
3211 West 9th Street, Trainer, PA 19061-5242
Toll Free: (800) 662-7459
E-Mail: sales@coburnmyers.com
Web site: www.coburnmyers.com
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A tension control bolt (TC bolt) is a heavy duty bolt used in steel frame construction. The head is usually domed and is not designed to be driven. The end of the shank has a spline on it which is engaged by a special power wrench which prevents the bolt from turning while the nut is tightened. When the appropriate torque is reached the spline shears off.
A490 ROUND HEAD T.C. BOLT PLAIN W/ A563 DH HVY HEX NUT & F436 WASHER (INCH)
Unit of Measure
1 2 

Item #

Item Name

Package Quantity

Web Price

75C175BT4/NW N/A 3/4-10 X 1 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 300 $1,289.74
75C200BT4/NW N/A 3/4-10 X 2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 280 $1,179.39
75C225BT4/NW N/A 3/4-10 X 2 1/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 270 $1,187.89
75C250BT4/NW N/A 3/4-10 X 2 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 250 $1,145.81
75C275BT4/NW N/A 3/4-10 X 2 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 250 $1,241.44
75C300BT4/NW N/A 3/4-10 X 3 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 240 $1,240.44
87C200BT4/NW N/A 7/8-9 X 2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 200 QUOTE
87C225BT4/NW N/A 7/8-9 X 2 1/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 190 QUOTE
87C250BT4/NW N/A 7/8-9 X 2 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 180 $1,211.20
87C275BT4/NW N/A 7/8-9 X 2 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 180 QUOTE
87C300BT4/NW N/A 7/8-9 X 3 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 170 QUOTE
100C200BT4/NW N/A 1-8 X 2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 140 QUOTE
100C225BT4/NW N/A 1-8 X 2 1/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 140 $1,238.50
100C250BT4/NW N/A 1-8 X 2 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 130 QUOTE
100C275BT4/NW N/A 1-8 X 2 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 130 $1,235.40
100C300BT4/NW N/A 1-8 X 3 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 120 $1,185.08
100C325BT4/NW N/A 1-8 X 3 1/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 120 $1,221.52
100C350BT4/NW N/A 1-8 X 3 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 110 QUOTE
100C375BT4/NW N/A 1-8 X 3 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 110 QUOTE
100C400BT4/NW N/A 1-8 X 4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 100 QUOTE
100C425BT4/NW N/A 1-8 X 4 1/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 100 $1,230.97
100C450BT4/NW N/A 1-8 X 4 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 100 QUOTE
100C500BT4/NW N/A 1-8 X 5 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 90 $1,267.09
100C550BT4/NW N/A 1-8 X 5 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 80 $1,199.00
100C600BT4/NW N/A 1-8 X 6 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 70 $1,082.45
Unit of Measure
1 2